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  1. JerryT

    Dash Fan Setting 1+2 not working

    There’s a rheostat located under your glove box which controls the fan speed. I replaced mine in my 98 Expy and fixed the problem. It was reasonably easy to do. It was easier to just cut and splice the wires and replace the resistor.
  2. JerryT

    Help! P0171, making me pull my hair out!

    I do not believe it’s a fuel injector, if so you would throw a cylinder misfire code. I had the exact same intermittent P0171 code on my 1998 Expy. It took me about 6months to fix. I did a smoke test and found a small leak at the hose connector to the charcoal canister located under the fuel I...
  3. JerryT

    My last hope on my rough idle

    Exact same problem and fix with my 98 Expy.
  4. JerryT

    HOSED BY A HOSE....AT THE END OF MY ROPE.

    It looks like your Evap hose. The far end connects behind the throttle body. See my picture,
  5. JerryT

    3rd gen steering wheel controls or clock spring

    My cruise control stopped working and I diagnosed it to broken wires at a connector hard wired to the clock spring. Replaced the clockspring and everything works again. Could be a similar problem with your switches.
  6. JerryT

    98 Expedition - liftgate handle hard to turn

    Same thing happened with my 98 Expy. I replaced the cables (purchased from Amazon) and the latch lift now opens like it’s brand new. The plastic stoppers on the old cables cracked over time. It took alittle bit of fiddling to remove and reinstall the new cables but you’ll figure it out. Good...
  7. JerryT

    Lifespan of 3rd Gen front struts?

    1998 replaced at 200k miles, the originals were fine but thought it was time to replace. Expy does ride better and I could tell a before after difference.
  8. JerryT

    OBDII codes keep changing

    P0308 is a miss fire on cylinder 8. Recommend replacing the spark plug and FI on #8
  9. JerryT

    ROUGH IDLE WHEN IN GEAR??

    Wait for codes, they will come. In the mean time I would remove and clean your idle air valve (two bolts and 1 electrical connector) and replace your PCV grommet on the valve cover. They’re two culprits for rough idle, then wait for it to throw a code(s).
  10. JerryT

    Break line replacements

    I don’t see why not as long as you replace the brake lines with the save diameter tube, I.e., 1/4 , 3/16, etc. I have a 98 Expy and had to replace the driver side brake line due to leaking caused by corrosion. The galvanic corrosion was caused by the brake line touching the frame and creating...
  11. JerryT

    Check Engine Light

    I would try to reset the TPS see attached link. If that doesn’t work, I’d replace the TPS and continue from there. The cat codes could be a symptom of poor throttling / idling. Good luck...
  12. JerryT

    Advice on resurrecting my Expedition

    Need to ask your brother more questions about the blown out spark plug. Did the engine overheat then blow? Was the spark plug just loose and vibration caused it to back out? Did he install it incorrectly? Cross threaded? You could have a bad piston ring, or internal engine damage. Why did...
  13. JerryT

    Hello - Need Troubleshooting Ideas for Problem with my Expedition

    Sounds like something much more serious than a spark plug issue. Ask your mechanic again and get a better explanation of the problem.
  14. JerryT

    Cruise control dashboard light?

    My cruise control works perfectly but there is no dashboard light illuminated when the cruise control is on. My memory is failing me as I cannot remember if there ever was a cruise on light or if the bulb is just burned out. Any 1998 Expedition owners have a cruise control on light on their dash?
  15. JerryT

    Side mirror not locked into position and causing it to fold going down the road

    I broke my drive side mirror 2 times and had to replace it twice. Ordered a new mirror, chrome , removed the door panel and replaced it. Has a small dc motor which controls the mirror position. Was easy to replace. You can do it yourself. I think it took me a total of 1.5 hours from start to...
  16. JerryT

    Cleaning throttle body to EGR valve passageway

    I did not have any codes but had a loss in power. Replaced the EGR valve and Cleaned the intake manifold as deep as I was able to go without removing it. Full power restored to my ‘98 Expy. Your throttle intake looks bad I would clean it.
  17. JerryT

    Codes p0174 and p0401

    Here’s another video which may be helpful. I would start with checking for a vacuum leak and replacing old hoses. I’ve had this problem on my 98 Expy and thoroughly cleaned the throttle body and intake manifold, there’s already a post on that. Good luck and don’t fret, you’ll get it fixed...
  18. JerryT

    Expy died with no warning and then revived itself. Thoughts?

    Sounds like you might have a bad battery. I still have a 1998 Expedition my wife bought brand new in 98, had a similar thing happen to me and it was the battery.
  19. JerryT

    P0442

    It took about two months but I finally fixed mine. I replaced my gas cap (cleaned area around it), replaced purge valve and engine hose and still got the P0442 check engine light. I ordered a smoke test kit from Amazon $80 and performed a smoke test. Sure enough I found smoke leaking from a...
  20. JerryT

    Rear hatch stuck

    See my reply below. Good luck.
  21. JerryT

    Rear hatch stuck

    Red Hound Auto Compatible with... https://www.amazon.com/dp/B01A01PC6U?ref=ppx_pop_mob_ap_share I had the exact same problem. Tail gate would not open. And the rear window would not open. I crawled back into the truck and removed the interior panel attached to the hatch. It was easy - pop off...
  22. JerryT

    Is something missing here?

    Nope the Evap purge valve is just to the right of those 4 holes. I can see the 4 holes in your pict.
  23. JerryT

    Is something missing here?

    See the attached picture of my 98 Expy engine area. There are 4 screw holes but no part. Every engine picture I’ve seen doesn’t have anything bolted to this spot. Does anyone know what would go here?
  24. JerryT

    Has anyone experienced a rattle at the catalytic converters?

    I had the same rattle like noise but found it came from a loose oxygen sensor. Actually both were loose. I tightened them up and rattle disappeared. You need a special socket to tighten the O2 sensors.
  25. JerryT

    Gear Ratios

    You most likely already tried this but if not; turn off overdrive and / or turn to A4WD. Be safe.

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